Does anyone have an idea - or an idea how i can find out about it - how chlorine solution (used as desinfection agent) will affect slings, both short term and long term.

Google is just tring to sell me chlorine pills to disinfect my pool...

And just to give you the background why i am asking (no, i am not trying to booty some slings from the site of a climbing accident, where the rescue folks had to disinfect some wounds on the site):

Its actually for those big, bulky industrial slings (the fat, heavy, colored things with a big WLL 1000kg written on them) and it is an industrial application, but the materials should be the same, so i thought i just ask here, if anyone has an idea how to find out more.

This was discussed in the US caving community a few years back when white nose syndrome was discovered. You may find more info on the NSS forum. If I remember correctly, PMI has published research showing that ropes can be disinfected once with chlorine without a significant impact on strength(I think it was -5%), but the damage is cumulative with repeated exposure. We now most use quaternary ammonium for decon because testing hasn't shown any impact on nylon.

Does anyone have an idea - or an idea how i can find out about it - how chlorine solution (used as desinfection agent) will affect slings, both short term and long term.

Google is just tring to sell me chlorine pills to disinfect my pool...

And just to give you the background why i am asking (no, i am not trying to booty some slings from the site of a climbing accident, where the rescue folks had to disinfect some wounds on the site):

Its actually for those big, bulky industrial slings (the fat, heavy, colored things with a big WLL 1000kg written on them) and it is an industrial application, but the materials should be the same, so i thought i just ask here, if anyone has an idea how to find out more.

qwert

I cannot comment on long-term, but for short-term, chlorine bleach does not seem to affect nylon. I tested a piece of 1" tubular soaked in Clorox brand bleach. I let the sample sit out 24 hours to dry and then I pull tested the piece. There was almost no noticeable strength loss. I think the piece failed at within 4% of what the control failed at.

According to the website below, nylon has "fair" resistance to chlorine water.

Does anyone have an idea - or an idea how i can find out about it - how chlorine solution (used as desinfection agent) will affect slings, both short term and long term.

Google is just tring to sell me chlorine pills to disinfect my pool...

And just to give you the background why i am asking (no, i am not trying to booty some slings from the site of a climbing accident, where the rescue folks had to disinfect some wounds on the site):

Its actually for those big, bulky industrial slings (the fat, heavy, colored things with a big WLL 1000kg written on them) and it is an industrial application, but the materials should be the same, so i thought i just ask here, if anyone has an idea how to find out more.

qwert

I cannot comment on long-term, but for short-term, chlorine bleach does not seem to affect nylon. I tested a piece of 1" tubular soaked in Clorox brand bleach. I let the sample sit out 24 hours to dry and then I pull tested the piece. There was almost no noticeable strength loss. I think the piece failed at within 4% of what the control failed at.

According to the website below, nylon has "fair" resistance to chlorine water.

http://www.coleparmer.com/Chemical-Resistance

Just curious, doesn't this show a 4% reduction in strength? Congruent with what was said here?

amoses wrote:

If I remember correctly, PMI has published research showing that ropes can be disinfected once with chlorine without a significant impact on strength(I think it was -5%), but the damage is cumulative with repeated exposure.

And then you contradicted this same statement here....

USnavy wrote:

I cannot comment on long-term, but for short-term, chlorine bleach does not seem to affect nylon.

Does anyone have an idea - or an idea how i can find out about it - how chlorine solution (used as desinfection agent) will affect slings, both short term and long term.

Google is just tring to sell me chlorine pills to disinfect my pool...

And just to give you the background why i am asking (no, i am not trying to booty some slings from the site of a climbing accident, where the rescue folks had to disinfect some wounds on the site):

Its actually for those big, bulky industrial slings (the fat, heavy, colored things with a big WLL 1000kg written on them) and it is an industrial application, but the materials should be the same, so i thought i just ask here, if anyone has an idea how to find out more.

qwert

I cannot comment on long-term, but for short-term, chlorine bleach does not seem to affect nylon. I tested a piece of 1" tubular soaked in Clorox brand bleach. I let the sample sit out 24 hours to dry and then I pull tested the piece. There was almost no noticeable strength loss. I think the piece failed at within 4% of what the control failed at.

According to the website below, nylon has "fair" resistance to chlorine water.

http://www.coleparmer.com/Chemical-Resistance

Just curious, doesn't this show a 4% reduction in strength? Congruent with what was said here?

amoses wrote:

If I remember correctly, PMI has published research showing that ropes can be disinfected once with chlorine without a significant impact on strength(I think it was -5%), but the damage is cumulative with repeated exposure.

And then you contradicted this same statement here....

USnavy wrote:

I cannot comment on long-term, but for short-term, chlorine bleach does not seem to affect nylon.

So conclusively--Chlorine seems to weaken Nylon.

Sure, a 4% drop would show a 4% reduction in strength. But 4% of 22kN is an extremely negligible value. So yes, it reduces the strength, but for the short term, it does not reduce it enough to matter.

Does anyone have an idea - or an idea how i can find out about it - how chlorine solution (used as desinfection agent) will affect slings, both short term and long term.

I don't know about how chlorine bleach effects the strength of nylon. But, as a home brewer, I often use a weak chlorine bleach solution to sanitize my brewing hardware. The ratio I use is about: 2 oz of bleach to 5 gallons of water and a 20 minute wet soak. Then a hot water rinse for metal or just air dry for plastic.

The food preparation industry often uses 1 tablespoon bleach to 1 gallon of water to sanitize surfaces and glassware. I think that gives 200 ppm.

I don't know about how chlorine bleach effects the strength of nylon. But, as a home brewer, I often use a weak chlorine bleach solution to sanitize my brewing hardware. The ratio I use is about: 2 oz of bleach to 5 gallons of water and a 20 minute wet soak. Then a hot water rinse for metal or just air dry for plastic.

The food preparation industry often uses 1 tablespoon bleach to 1 gallon of water to sanitize surfaces and glassware. I think that gives 200 ppm.

I've bookmarked this answer in case I ever do some home brewing. I would of never thought to look on RC.com for this specific bit of information.

I cannot comment on long-term, but for short-term, chlorine bleach does not seem to affect nylon.

Chlorine has a cumulative affect on nylon. Each exposure to chlorine will continue to degrade nylon's material properties.

Repeated washing with chlorine is certainly not good for the material in the short or long term.

If this is a non-life support application, than don't worry too much about it. Just realize it will break sooner. If you plan to climb with or walk under something supported by the slings, I would not recommend exposing them to chlorine at all.

I don't know about how chlorine bleach effects the strength of nylon. But, as a home brewer, I often use a weak chlorine bleach solution to sanitize my brewing hardware. The ratio I use is about: 2 oz of bleach to 5 gallons of water and a 20 minute wet soak. Then a hot water rinse for metal or just air dry for plastic.

The food preparation industry often uses 1 tablespoon bleach to 1 gallon of water to sanitize surfaces and glassware. I think that gives 200 ppm.

I've bookmarked this answer in case I ever do some home brewing. I would of never thought to look on RC.com for this specific bit of information.

I've got nothing on tap at the moment due to the hot weather (ale yeast goes crazy) and being busy climbing. But next up is a British Ale and then an Oatmeal Stout. After that, an Anchor Porter clone. So, if you're ever in Connecticut.....

Oh, and the whole point was I "suspect" that very weak chlorine solution wouldn't have a tremendous effect on nylon, but I really don't know. I was just pointing out what strength solution is used to sanitize, if that's what the OP is after.

I've got nothing on tap at the moment due to the hot weather (ale yeast goes crazy) and being busy climbing. But next up is a British Ale and then an Oatmeal Stout. After that, an Anchor Porter clone. So, if you're ever in Connecticut.....

Thanks, I'd be glad to take you up on that taste testing if I'm ever in that part of the country.

I don't know about how chlorine bleach effects the strength of nylon. But, as a home brewer, I often use a weak chlorine bleach solution to sanitize my brewing hardware. The ratio I use is about: 2 oz of bleach to 5 gallons of water and a 20 minute wet soak. Then a hot water rinse for metal or just air dry for plastic.

The food preparation industry often uses 1 tablespoon bleach to 1 gallon of water to sanitize surfaces and glassware. I think that gives 200 ppm.

I've bookmarked this answer in case I ever do some home brewing. I would of never thought to look on RC.com for this specific bit of information.

It is a good answer, but not the only answer. I am also a homebrewer, but have never used chlorine as a sanitizer.

I don't know about how chlorine bleach effects the strength of nylon. But, as a home brewer, I often use a weak chlorine bleach solution to sanitize my brewing hardware. The ratio I use is about: 2 oz of bleach to 5 gallons of water and a 20 minute wet soak. Then a hot water rinse for metal or just air dry for plastic.

The food preparation industry often uses 1 tablespoon bleach to 1 gallon of water to sanitize surfaces and glassware. I think that gives 200 ppm.

I've bookmarked this answer in case I ever do some home brewing. I would of never thought to look on RC.com for this specific bit of information.

It is a good answer, but not the only answer. I am also a homebrewer, but have never used chlorine as a sanitizer.

Wow!!!! Sorry no one caught the sarcasm in my posts.

I guess I'm the only one here who finds it comical that advise is being given about home brewing and cleaning on a rock climbing forum and the question posed was the effects on chlorine on slings/soft goods.

In reply to:

I don't know about how chlorine bleach effects the strength of nylon. But, as a home brewer, I often use a weak chlorine bleach solution to sanitize my brewing hardware.

I don't know about how chlorine bleach effects the strength of nylon. But, as a home brewer, I often use a weak chlorine bleach solution to sanitize my brewing hardware. The ratio I use is about: 2 oz of bleach to 5 gallons of water and a 20 minute wet soak. Then a hot water rinse for metal or just air dry for plastic.

The food preparation industry often uses 1 tablespoon bleach to 1 gallon of water to sanitize surfaces and glassware. I think that gives 200 ppm.

I've bookmarked this answer in case I ever do some home brewing. I would of never thought to look on RC.com for this specific bit of information.

It is a good answer, but not the only answer. I am also a homebrewer, but have never used chlorine as a sanitizer.

Wow!!!! Sorry no one caught the sarcasm in my posts.

I guess I'm the only one here who finds it comical that advise is being given about home brewing and cleaning on a rock climbing forum and the question posed was the effects on chlorine on slings/soft goods.

If it makes you feel any better, I've never bleached my climbing gear either...

Somehow i have a slight feeling that this thread is drifting… Oh well, i kinda got my answer. Plus, the whole homebrew sanitizing stuff is at least not that off from the original situation. Beer and water are almost the same (at least in america), so its OK.

I don't know about how chlorine bleach effects the strength of nylon. But, as a home brewer, I often use a weak chlorine bleach solution to sanitize my brewing hardware. The ratio I use is about: 2 oz of bleach to 5 gallons of water and a 20 minute wet soak. Then a hot water rinse for metal or just air dry for plastic.

The food preparation industry often uses 1 tablespoon bleach to 1 gallon of water to sanitize surfaces and glassware. I think that gives 200 ppm.

I've bookmarked this answer in case I ever do some home brewing. I would of never thought to look on RC.com for this specific bit of information.

It is a good answer, but not the only answer. I am also a homebrewer, but have never used chlorine as a sanitizer.

Wow!!!! Sorry no one caught the sarcasm in my posts.

I guess I'm the only one here who finds it comical that advise is being given about home brewing and cleaning on a rock climbing forum and the question posed was the effects on chlorine on slings/soft goods.

In reply to:

I don't know about how chlorine bleach effects the strength of nylon. But, as a home brewer, I often use a weak chlorine bleach solution to sanitize my brewing hardware.

What a leap.

Not sure if you're saying that *I* made a leap here. But, I thought I made the reason for my beer equipment sanitizing response pretty clear: "Oh, and the whole point was I "suspect" that very weak chlorine solution wouldn't have a tremendous effect on nylon, but I really don't know. I was just pointing out what strength solution is used to sanitize, if that's what the OP is after. "

You only need a very weak chlorine solution to "sanitize". The OP was not asking about climbing gear so his question was sort of OT in a climbing forum to begin with. It's up to the OP to deem if the solution is strong enough to sanitize yet weak enough not to cause much damage in his application.

I do NOT recommend exposing climbing software to chlorine.

OP: If you usage is, as I suspect, for the food industry can you steam clean/washdown those lifting slings just like all the other equipment?